A mysterious attack in the Iranian city of Karaj on Tuesday night damaged a factory producing aluminum blades for nuclear centrifuges, Channel 13 News reported on Wednesday, after Iranian state television claimed Tehran had thwarted a "sabotage attack" on a nuclear facility.
Some reports said the attack was carried out by a drone, while others denied it.
Iranian state TV said an attempted attack against a building belonging to Iran’s Atomic Energy Organization in Karaj “left no casualties or damages and was unable to disrupt the Iranian nuclear program.”
There was limited damage from a sabotage attempt at a building of Iran's Atomic Energy Organization in June, the Iranian government said on Tuesday, despite satellite images appearing to show that part of a roof was missing.
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"We have had no damage to equipment. There was small damage to a roof and the (satellite) pictures were taken when the roof was removed for repairs," government spokesman Ali Rabiei told a news conference carried by state media.
Iranian state media on June 23 said the sabotage attempt against the nuclear building had been foiled, adding that it caused no "loss of life or property damage."
Iran has accused Israel of several attacks on facilities linked to its nuclear program and killing its nuclear scientists over the past years. Israel has neither denied nor confirmed the allegations.
In April, Iran announced that it had identified the person responsible for the blast at its main Nantanz nuclear plant as Reza Karimi, the state television network IRIB reported. The report said he fled Iran before the blast, which Iran blamed on Israel.
The attack on Iran's key Natanz nuclear site was caused by an explosive device that was smuggled into the plant and detonated remotely, the New York Times reported.
The Associated Press and Reuters contributed to this report.